/*
 * Copyright (c) 2017-2018 ARM Limited.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#pragma once

#ifdef __arm__

#include "transpose_interleave_common.hpp"

// Generic unblocked transposed 8x32-bit sized specialisation
template <>
template <typename T>
inline void TransformImpl<8, 1, true, 4, 4>::Transform(
    T *out, const T *const in, const int stride,
    const int x0, const int xmax, const int k0, const int kmax)
{
    // Redirect to a 16x uint16_t specialisation
    TransformImpl<16, 1, true, 2, 2>::Transform(
        reinterpret_cast<uint16_t *>(out),
        reinterpret_cast<const uint16_t *const>(in),
        stride * 2, x0 * 2, xmax * 2, k0, kmax);
}

// Generic 12x16-bit sized specialisation
template <>
template <typename T>
inline void TransformImpl<16, 1, true, 2, 2>::Transform(
    T *out, const T *const in, const int stride,
    const int x0, const int xmax, const int k0, const int kmax)
{
    // Redirect to a uint16_t specialisation
    Transform(
        reinterpret_cast<uint16_t *>(out),
        reinterpret_cast<const uint16_t *const>(in),
        stride, x0, xmax, k0, kmax);
}

// Specialised 16 x uint16_t version
template <>
inline void TransposeInterleaveCommon<16, uint16_t, uint16_t>::moveblock_1x1(const uint16_t *&in0, uint16_t *out)
{
    __asm volatile(
        "VLD1.32    {d0-d3}, [%[in0]]!\n"
        "VST1.32    {d0-d3}, [%[out]]\n" ASM_PREFETCH("[%[in0], #192]")
        : [in0] "+r"(in0),
        [out] "+r"(out)
        :
        : "q0", "q1", "memory");
}

template <>
inline void TransposeInterleaveCommon<16, uint16_t, uint16_t>::moveblock_1x2(const uint16_t *&in0, const uint16_t *&in1, uint16_t *out)
{
    __asm volatile(
        "VLD1.32    {d0-d3}, [%[in0]]!\n"
        "VST1.32    {d0-d3}, [%[out]]!\n" ASM_PREFETCH("[%[in0], #192]")
        "VLD1.32    {d0-d3}, [%[in1]]!\n"
        "VST1.32    {d0-d3}, [%[out]]\n" ASM_PREFETCH("[%[in1], #192]") "SUB    %[out], %[out], #32\n"
        : [in0] "+r"(in0),
        [in1] "+r"(in1),
        [out] "+r"(out)
        :
        : "q0", "q1", "memory");
}

template <>
inline void TransposeInterleaveCommon<16, uint16_t, uint16_t>::moveblock_1x4(const uint16_t *&in0, const uint16_t *&in1, const uint16_t *&in2, const uint16_t *&in3, uint16_t *out)
{
    __asm __volatile(
        "VLD1.32    {d0-d3}, [%[in0]]!\n"
        "VST1.32    {d0-d3}, [%[out]]!\n" ASM_PREFETCH("[%[in0], #192]")
        "VLD1.32    {d0-d3}, [%[in1]]!\n"
        "VST1.32    {d0-d3}, [%[out]]!\n" ASM_PREFETCH("[%[in1], #192]")
        "VLD1.32    {d0-d3}, [%[in2]]!\n"
        "VST1.32    {d0-d3}, [%[out]]!\n" ASM_PREFETCH("[%[in2], #192]")
        "VLD1.32    {d0-d3}, [%[in3]]!\n"
        "VST1.32    {d0-d3}, [%[out]]\n" ASM_PREFETCH("[%[in3], #192]") "SUB    %[out], %[out], #96\n"
        : [in0] "+r"(in0),
        [in1] "+r"(in1),
        [in2] "+r"(in2),
        [in3] "+r"(in3),
        [out] "+r"(out)
        :
        : "q0", "q1", "memory");
}

template <>
template <>
inline void TransformImpl<16, 1, true, 2, 2>::Transform(
    uint16_t *out, const uint16_t *const in, const int stride,
    const int x0, const int xmax, const int k0, const int kmax)
{
    TransposeInterleaveCommon<16, uint16_t, uint16_t>::Transform(out, in, stride, x0, xmax, k0, kmax);
}

#endif // __arm__
